The flower lupine came to Sweden as a garden plant from North America. At the end of the 19th century, the flower spread wildly in the wild and since then it is found throughout much of the country.

However, it is not harmless. The plant itself is poisonous and can cause stomach upset and vomiting in humans, including birth defects and liver damage in some animals. It also poses a threat to biodiversity and often takes over the areas where it grows.

Do not compost

Recently, the Nature Conservation Association in Örebro county has organized occasions where jointly cleaned and excavated lupines have been used to reduce the spread.

- You can take them home and put in a vase. But once they have withered, it is important to throw them in the usual combustible garbage and not on the compost, says Kerstin Hellberg, chair of the Nature Conservation Society's Örebrokrets.

The nonprofit Association of Field Biologists has also appointed June 6 the Great Lupine Fighter Day and urges the Commonwealth to contribute to reducing the spread of the flower lupine.